The CAT 320D is one of Caterpillar’s most widely used medium excavators, and radiator failure is a common issue that requires timely replacement to avoid engine overheating. To help maintenance teams and parts suppliers select the correct replacement, this article summarizes key replacement specifications and cross-reference information for original CAT 320D radiator parts.
Core Basic Replacement Specifications
All CAT 320D engine radiators use all-aluminum construction for optimal heat dissipation, consistent with the original factory design. Two main OEM part numbers are available for different 320D sub-models, both matching the factory installation dimensions:
All radiators for this model use wavy square-wave fins with 8 fins per inch, and smooth tubes for unobstructed coolant flow, matching the original cooling performance requirements.
Complete Cross-Reference of Related OEM Accessories
Besides the main engine radiator, the CAT 320D requires matching cooling system accessories that also have standardized OEM part numbers for replacement:
When replacing the radiator for a CAT 320D, first confirm the specific sub-model of the excavator to avoid dimension mismatch. For mixed fleets or second-hand excavators with unknown production batches, cross-verify the original part number on the radiator tank before ordering. Both original and high-quality aftermarket all-aluminum radiators are available: original parts offer a 12+ month warranty and guaranteed matching, while aftermarket options provide cost savings of 20-30% for budget-friendly replacement. Always pressure-test the new radiator before installation to avoid hidden leaks that cause post-repair downtime.
This specification and reference table aligns with current aftermarket supply data for CAT 320D, helping maintenance teams quickly select the correct parts and reduce maintenance delays.
Post time: Jun-15-2026